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Budhi Oktavia
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Jurnal Periodic Jurusan Kimia UNP
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 343 Documents
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Pengaruh Penambahan Carboxymethyl Cellulose Terhadap Sifat Fisik, Mekanik dan Biodegradasi Plastik Biodegradable Berbasis Selulosa Bakteri –Sorbitol dari Air Kelapa (Cocos nucifera) Sukardi, Azaria Saiza; Putra, Ananda
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125635

Abstract

Biodegradable plastic is one solution to overcome environmental problems because it is easily degraded by microorganisms. This study was conducted to determine the effect of adding additives in the form of Carboxymethyl Celluose (CMC) on biodegradable plastic based on bacterial cellulose from coconut water (Cocos nucifera) with sorbitol as a plasticizer. The addition of additives in the form of Carboxymethyl Celluose (CMC) with mass variations of 0 gr, 1 gr, 3 gr, 5 gr, and 7 gr to improve the quality of biodegradable plastics in order to replace conventional plastics and determine the physical, mechanical and biodegradation properties. The results of the physical properties test obtained are the value of % water content and the degree of inflatation in plastic increases with the addition of CMC mass. The best results from mechanical properties testing obtained were the addition of CMC 5 gr with tensile strength values of 101 MPa, elasticity of 466.11 MPa, and elongation of 21.71%. In biodegradation testing, plastics with the best mechanical properties have been completely degraded for 12 days.
Pengaruh Laju Alir Terhadap Penyerapan Ion Logam Cd2+ Menggunakan Biomassa Kulit Langsat (Lansium domesticum) dengan Metode Kolom Ideal, Flami Luthfianisa; Kurniawati, Desy; Mawardi, Mawardi; Hardeli, Hardeli
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125540

Abstract

Increasing industrial activities have a negative impact on the ecosystem. One of them is environmental pollution. Heavy metals can be found in industrial waste whose presence can endanger living things around the industrial environment. Overcoming the presence of heavy metal ions in industrial waste can be done by biosorption methods. Biosorption is one of the strategies that can be utilized to adsorb heavy metal levels contained in wastewater. Langsat shell was used as biomass to adsorb Cd2+ metal ions using column method.  This study was conducted to determine the effect of flow rate on the absorption of Cd2+ metal ions. The results showed that the optimal absorption of Cd2+ metal ions by langsat shell occurred at a flow rate of 1 mL /  min with an absorption capacity of 16.5425 mg/gram.
Sintesis dan Karakterisasi Fotokatalis TiO2/Cu dengan Metode yang Ramah Lingkungan Rahmi, Zulfiyanti; Suryani, Okta
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125759

Abstract

Most of the energy consumed comes from non-renewable fossil fuel resources. Therefore, a renewable and environmentally friendly energy source is needed, namely sunlight. One way to utilize sunlight is to store it into chemical compounds, namely hydrogen. The hydrogen used comes from water through a process of decomposing its molecules called water decomposition. Water decomposition uses sunlight and semiconductor photocatalysts, such as TiO2. In this study, TiO2 has been synthesized and doped with Cu metal to reduce the band gap with a simple and environmentally friendly method. XRD characterization to determine the structure and particle size. TiO2 has an anatase crystal structure with an average particle size of 28.28 nm. TiO2 has an energy band gap of 3.2 eV. Then doping with Cu metal with varying concentrations of Cu metal soluble (0.1 M san 0.5 M) causes the energy band gap to decrease to 3.17 and 3.07 eV. Metal doping is proven to reduce the band gap energy of TiO2 photocatalysts. In addition, metal doping also helps widen the light absorption area by TiO2, but the absorption is still in the UV region.
Optimasi Sifat Fisik Krim dengan Variasi Asam Stearat dan Trietanolamin dalam Pembuatan Basis Krim Amelia, Fazila; Amelia, Fitri
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.132857

Abstract

Cosmetics in cream form are more suitable. Stearic acid and triethanolamine are used as emulsifiers in making creams. The purpose of this study was to see the variation of stearic acid with triethanolamine that produces a stable cream against the physical properties of the cream preparation. The cream made was a cream with an oil-in-water (w/o) type with variations of stearic acid 5, 10, 15, 20%, and triethanolamine 2, 2.5, 3, 3.5, 4%. The heating temperature used was 400C. The cream preparation formed was evaluated through physical property testing including pH testing and Homogeneity testing and organoleptic testing. The results showed that the higher the concentration of stearic acid used, the pH of the cream decreased, but was still within the requirements of a good cream for the skin, as well as homogeneity, the higher the concentration of stearic acid, the more homogeneous the cream produced. Panelist organoleptic testing liked the color, odor and homogeneity of the 20% stearic acid variation, which was preferred by panelists. Based on the results obtained, it can be concluded that the concentration of the cream preparation with variations of stearic acid: triethanolamine 20%: 3.5% is the best preparation based on testing of physical and organoleptic properties.
Uji Antidiabetes pada Ekstrak Buah Alpukat (Persea americana) Menghambat α-Amylase secara in silico Sari, Lisa Permata; Amelia, Fitri
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.133024

Abstract

DM is a metabolic disorder characterized by chronic high blood glucose levels that can cause death. Long-term hyperglycemia can slowly cause retinopathy, heart and blood vessel disease, and neuropathy. Avocado is known to be used as an anti-diabetic because it contains saponin, alkaloid, steroid, phenol, tannin dan glikoside that are effective in lowering blood glucose levels. This study aims to test the potential for inhibition of the α-amylase enzyme using the molecular docking method. The study was conducted by utilizing a protein that has PDB ID 2QV4 to interact with active compounds in the ethanol extract of Avocado fruit. The results obtained were that the compounds procyanidin, vitexin, dan isoharment rhamnoside have good binding ability to α-amylase. Thus, these compounds have the potential as antidiabetics.
Uji Aktivitas Antikolesterol Chromolaena Odorata Secara In Silico dengan Sisi Penghambat HMG-CoA Reduktase Irma, Tri Wahyuni; Amelia, Fitri; Rahmayani, Sherly
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.132836

Abstract

Cholesterol is a disease caused by an unhealthy lifestyle. Cholesterol occurs because fat accumulates in blood vessels so that plaques form which causes blood vessels to narrow. With this problem in mind, this research was conducted to predict drug compounds capable of treating cholesterol disease by comparing them with simvastatin. Chromolaena odorata can be used as a medicinal plant that can treat cholesterol disease because this plant contains active compounds of flavonoids. This research tries to see the active interaction with HMG-CoA reductase inhibition in an improved way using Moe 2009.10 software. Based on the results of research that has been done based on the comparison of ∆G, compound O-Geranylvanillin, Avenestergenin B2, 5-O-Methylembelin, Kaempferol 3-[2’’-(6’’’-coumaroylglucosyl)- rhamnoside] 7-glucoside, ( ± )-Taxifolin, Hesperetin, ( ± )-Naringenin, Luteolin, 3′ ,4′ -Methylenedioxy epicatechin 5,7-dimethyl ether has the potential to be used as a candidate for anti-cholesterol drugs to replace simvastatin through the HMG-CoA reductase inhibition mechanism.
Studi Pemanfaatan Rumput Liar Pekarangan Rumah sebagai Bahan Baku Pembuatan Ekoenzim Syafriadi, Riko; Nizar, Umar Kalmar; Stiadi, Della Rosalynna; Zuyyina, Himla; Fitriani, Fitriani; Fika, Miva Hemalia; Fadhila, Radhiatul; Syafri, Vanny Sofiana
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.133838

Abstract

Wild grass is a plant that grows unwanted in certain areas such as fields, gardens, agricultural land and yards. This plant is generally discarded and rarely used. Based on the composition of the materials used in ecoenzymes, fresh wild grass plants have great potential to be used as raw materials for ecoenzymes. This study aims to determine the characteristics of ecoenzymes produced using wild grass from home gardens, such as fragrant nutsedge (Cyperus aromaticus var. Elatus), virginica grass (Leersia virginica), Belulang grass (Eleusine indica), Peking grass (Agrostis stolonifera) and Ilalang (Imperata cylindrica). Wild grass with a certain composition is mixed with brown sugar and water in a ratio of 3: 1: 10 in five containers. The ecoenzyme manufacturing process is carried out for 90 days and changes in color, odor, and pH of the ecoenzyme product are observed. The results of this study indicate that the color of the five ecoenzymes produced shows a change in color to become more cloudy than the initial color of the ecoenzyme. The odor of the five ecoenzymes produced showed a change in odor to become more sour in the third month like the typical odor of weeds. Meanwhile, the pH of the ecoenzymes produced ranged from 5.8 to 7.8. The high pH of the ecoenzymes produced was caused by the low organic acid content of the ecoenzymes produced. In addition to observing the physical condition and pH of the ecoenzymes produced, qualitative testing of the nutrient content in the form of N, P and K was also carried out. Testing of the nutrient content of N, P and K carried out showed that the ecoenzymes produced from home yard weeds contained the nutrients N, P and K. These results indicate that the ecoenzymes produced can also be used as liquid organic fertilizers
Potensi Karbon dari Bunga Cemara Laut (Casuarina Equisetifolia) sebagai Sumber Material Maju berdasarkan Hasil Uji Proksimat Novel, Dheo Shalsabilla; Putri, Natasya Alya; Karsa, Dion Randi; Izanel, Rezi Ananta; Jannah, Miftahul; Khaliq, Feni Kurnia; Nizar, Umar Kalmar
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.130328

Abstract

This study explores the potential of Sea Pine Flowers from Pantai Pasir Jambak, Kota Padang, as a carbon source for advanced materials through carbonization. Carbon is generated by the incomplete carbonization process, which breaks down organic components. It can be obtained from organic waste materials that contain cellulose, hemicellulose, and lignin. Carbonization was performed at 350˚C for durations of 1 hour, 1.5 hours, 2 hours, and 2.5 hours. Analysis results revealed vapor content ranging from 2.18% to 2.69%, ash content from 4.44% to 8.06%, and bound carbon content from 89.25% to 92.88%. The highest bound carbon content was achieved at 350˚C for 1 hour (C-60). All results meet the SNI 06-3730-1995 standards. Low vapor and controlled ash content indicate high-quality carbon. This study confirms that Sea Pine Flowers have significant potential for advanced material applications as a high-quality carbon source.
Studi In Silico pada Ekstrak Buah Andaliman (Zanthoxylum acanthopodium DC.) Menghambat α-Amylase sebagai Antidiabetes Rani, Rada; Amelia, Fitri; Rahmayani, Sherly
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.132859

Abstract

DM is a metabolic disorder characterized by chronic high blood glucose levels that can cause death. Long-term hyperglycemia can slowly cause retinopathy, heart and blood vessel disease, and neuropathy. Andaliman is known to be used as an anti-diabetic because it contains flavonoids, terpenes, and essential oils that are effective in lowering blood glucose levels. This study aims to test the potential for inhibition of the α-amylase enzyme using the molecular docking method. The study was conducted by utilizing a protein that has PDB ID 2QV4 to interact with active compounds in the ethanol extract of andaliman fruit. The results obtained were that the compounds astragalin, cyclocerine, coribulbine, Kaempferol-3-glucuronide, morin, mururin A, oroxin B, rhamnetin, and pyrocyanidin B7 have good binding ability to α-amylase. Thus, these compounds have the potential as antidiabetics.
Pemanfaatan Karbon Batang Jagung (Zea mays) untuk Penjernihan Minyak Jelantah Karsa, Dion Randi; Putra, Ananda; Sanjaya, Hary; Novel, Dheo Shalsabilla; Izanel, Rezi Ananta; Putri, Natasya Alya; Khaliq, Feni Kurnia; Jannah, Miftahul; Nizar, Umar Kalmar
Periodic Vol 14, No 2 (2025): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v14i2.130330

Abstract

Used cooking oil, which is often discarded carelessly, can cause environmental pollution and adversely affect health if consumed again. This study explored the use of activated carbon produced from corn stalks (Zea mays) for the purification of used cooking oil. Activated carbon was produced through chemical activation using NaOH and applied to used cooking oil in various treatments, including combination with cornstarch. The quality of the purified oil was evaluated based on density, flow rate, saponification number, and acid number. The results of this study are expected to provide an environmentally friendly solution in the treatment of used cooking oil waste and utilize corn stalk waste effectively, thereby reducing negative impacts on the environment and improving public health.The result of this study is activated carbon from corn stalks which is able to reduce the density of 0.83 g/mL with cornstarch adsorbent, flow rate of 0.201 ml/s with carbon adsorbent, acid number of 5.31 mg/KOH with carbon adsorbent, saponification number of 139.46 mg/KOH.

Page 34 of 35 | Total Record : 343

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